Costco Suncast Shed Mount Adapter

I have this shed from Costco: https://www.costco.com/suncast-6'-x-4'-vertical-shed.product.100656654.html

I think Suncast might make some accessories for the shed, but I just wanted to mount some hooks I bought at the hardware store. I used the existing mounting holes or whatever they are in the shed to attach some french-cleat-like adapters that I screwed to some scrap wood which I then mounted the brackets to. 
 

The storage rack I used: https://www.acehardware.com/departments/storage-and-organization/shelving-and-shelving-units/shelving-and-cabinets/5203633 (believe it’s also on amazon here: https://a.co/d/av5fdOA)